Design and implementation method of data link network monitoring and management system which can dynamically configure IP cross segment is proposed in the paper. The application layer of the system adopts the hybrid architecture of B/S and C/S, and the network layer realizes the dynamic configuration of cross segment interaction among members of data link network through SDN network cluster. System functions include platform identity control, scheme management, cross segment parameter control, node status monitoring in multi segmented. The application result in the use of design show that the system can provide reliable monitoring and management services for the data link network, and the routing relationship between any node can be dynamically configured, which improves the flexibility of each node of the data link and meets the application requirements of the project.